Stairway

The stairway has 20 steps. Each step has a length of 22 cm and a height of 15 cm. Calculate the length of the handrail of staircases if the top and bottom exceed 10 cm.

Correct answer:

z =  520 cm

Step-by-step explanation:

x=20 cm y=15 cm n=20  a=n x2+y2=20 202+152=500 cm z=2 10+a=2 10+500=520 cm



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